PROCESS OF RECOVERING GOLD FROM ARSENO-PYRITE CONCENTRATE Russian patent published in 2008 - IPC C22B11/02 

Abstract RU 2321648 C1

FIELD: precious metal metallurgy.

SUBSTANCE: invention can be used for selective recovery of gold from arseno-pyrite gravitational and flotation concentrates at gold-recovery plants when performing adjustment of gold-containing products to refining conditions. Process comprises recovering gold from arseno-pyrite gold-ore concentrates into molten lead in presence of alkali (NaOH) at vigorous stirring with blade stirrer. Process is carried out at 330-350°C and concentrate-to-alkali weight ratio 1:(0.8-1) for 8-10 min, while agitating phases.

EFFECT: reduced consumption of alkali and lowered temperature at high rate of recovering gold and silver into molten lead.

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RU 2 321 648 C1

Authors

Chekushin Vladimir Semenovich

Olejnikova Natal'Ja Vasil'Evna

Dates

2008-04-10Published

2006-08-02Filed